Comet  R4 I

5-axis CNC machining centre designed for working bars or parts in aluminium, PVC, light alloys in general and steel up to 4 m. The machine is equipped with independent motorized vices that allow positioning the vices in concurrent operation time. The 4th and 5th axis allow the electrospindle to continuously rotate to NC from -15° to 90° on horizontal axis and from -360° to +360° on continuous vertical axis, to perform the work on the upper side and on all the lateral sides of the profile. It is equipped with a 12-place tool magazine, on the X axis gantry, able to host also one milling disc. It also has a mobile work table that facilitates the workpiece loading/unloading operation and significantly increases the workable section.

Technical data arrow_drop_down
X AXIS (longitudinal) (mm)
Z AXIS (vertical) (mm)
Y AXIS (transversal) (mm)
B AXIS (rotation on electrospindle horizontal axis)
-15° ÷ +90°
C AXIS (rotation on electrospindle vertical axis)
-360° ÷ +360°
Maximum power in S1 (kW)
Maximum power in S6 (60%) (kW)
Maximum speed (rpm)
Toolholder cone
HSK - 63F
Automatic tool holder coupling
Cooling with heat exchanger
Electrospindle controlled on 5 axes with the possibility of simultaneous interpolation
TAPPING CAPACITY (with tap on aluminium and through hole) 
With compensator
Stiff (optional)
Standard number of pneumatic vices
Independent motorised vices
Maximum number of pneumatic vices
Maximum number of magazine tools
Maximum diameter of the blade that can be inserted in the magazine (mm)
Ø = 250
Multi-piece operation
Basic multi-step machining - up to 5 steps
Extended machining, up to twice the maximum nominal length in X
Multi-piece mode machining in Y
Workpiece rotation for machining on 4 sides
5 axes electric head -R-

8.5 kW S1 high torque electrospindle also allows heavy duty machining, which is typical in industrial processing. As an option and for higher performances a 11 kW encoder equipped electrospindle is available for rigid tapping. Electrospindle rotation along B and C axes allows working on 5 sides of the profile, with no need of repositioning. It can be used for some types of steel extrusions as well as for aluminium profiles, thanks to the software-adjusted lubricating system. With its double tank it allows either minimum oil circulation or oil emulsion spray-mist.

Comet R4 I 5 axes electric head -R- Emmegi
Operator interface
The possibility of rotating the monitor on its vertical axis allows the operator to view the screen from any position. The user interface has a 24” touchscreen display in 16:9 format, portrait mode, equipped with the necessary USB connections for PC and CNC remote interfaces. It also features an operator panel, mouse, and it is set up for connecting barcode reader and remote operator panel.
Motorized vices
The motorized vices, each equipped with its own motor, can be positioned independently in the work area. The CNC manages the movement of vices and that of electrospindle head simultaneously, in the two different work areas in double operation mode. This enables significant productivity gains. Using absolute reference axes allows reducing the initialisation time required every time the machine is restarted.
Comet R4 I Motorized vices Emmegi
Comet R4 I Pneumatic stops Emmegi
Pneumatic stops
The machine is equipped with strong stops allowing bar reference. One is positioned on the left side (standard) and the other on the right side (optional). Each stop is activated by a pneumatic cylinder, it is retractable type and is automatically selected by the machine software according to the machining to be performed. In short, double stop offers the advantage to load more profile pieces for multi-piece mode machining as well as the possibility to reposition the bar or the piece and perform machining on particularly long profiles.
Tool magazine
The tool magazine is integrated on the X axis, in the lower part and behind the electrospindle. It allows great reduction of tool change times. This function is particularly useful in the extrusion head and tail machining, avoiding the stroke to get to the magazine, as it moves simultaneously with the electrospindle and its positions. The magazine can contain up to 12 toolholders with relevant tools, including a blade with a maximum diameter of 250 mm, which can be set at the operator’s discretion. Each position of the tool holder is provided with a sensor detecting the correct cone position.
Comet R4 I Tool magazine Emmegi
Comet R4 I Foldaway tunnel Emmegi
Foldaway tunnel
Integrated with the machine’s aesthetics and design, thanks to the perforated sheet metal for transparency and lightness, the tunnel opens and closes as needed. As its length can be reduced when not in use, it helps save space at the workshop. The outlet for the chip conveyor belt and its engine are built into the lower section, in view of an aesthetic and functional design.
Label printer (Optional)

The industrial label printer allows each cut profile to be identified with identifying features from the cutting list. In addition, barcode printing enables easy identification of the profile itself, which is particularly useful for subsequent machining steps on Machining Centres or assisted assembly lines.

Comet R4 I Label printer Emmegi

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